Pwr Type Reactors
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Sensitivity analysis for the dynamic behaviour of PWR reactor pressurizers / AnÃlise de sensibilidade no comportamento dinÃmico de pressurizadores de reatores PWR
All PWR reactors are provided with a component called pressurizer, whose aim is to supply the necessary high pressure for its operation and to contain pressure variations in the primary cooling system. This work is intended for determining changes in the variables of interest caused by perturbations in the principal parameters of the pressurizer model that c
Publicado em: 2007
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2. Emissão de 14C pelas unidades I e II da Central Nuclear Almirante Álvaro Alberto (CNAAA) e seu efeito local nos níveis ambientais
14 C is a is a long-lived beta-emitting nuclide (T = 5730 years) produced naturally 1/2 14 14 14 in the upper atmosphere as a result of reactions between neutrons and stable N( N(n,p) C). 14 C as well during their routine Although in a lesser extent, nuclear power plants produce 14 operation. Since it is converted in CO and mixed throughout the atmosphere, i
Publicado em: 2006
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3. Avaliação numérica do comportamento à fratura de um protótipo de vaso de pressão de reator PWR submetido a choque térmico pressurizado / Numerical evaluation of the fracture behavior of a PWR reactor pressure vessel prototype under pressurized thermal shock
In the primary system of a pressurized water reactor (PWR) nuclear power plant, the reactor coolant is kept at internal temperature around 300 C and internal pressure in the order of 15,0 MPa, during normal operation. The reactor pressure vessel (RPV) contains the fuel assemblies and is considered the most important component of the reactor primary system. T
Publicado em: 2005
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4. Experimental analysis of pressure drop and flow redistribution in axial flows in rod bundles
Fuel elements of PWR type nuclear reactors consist of rod bundles, arranged in a square array, and held by spacer grids. The coolant flows, mainly, axially along the rods. Although such elements are laterally open, experiments are performed in closed type test sections, originating the appearance of subchannels with different geometries. In the present work,
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000